DM54LS55/DM74LS55 2-Wide, 4-Input AND-OR-INVERT Gate General Description This device contains a combination of AND-OR-INVERT functions. The internal gates are configured as two, four-input AND gates with their outputs connected to a two-input NOR gate. Connection Diagram Dual-In-Line Package TL/F/10174 – 1 Order Number DM54LS55J, DM54LS55W, DM74LS55M or DM74LS55N See NS Package Number J14A, M14A, N14A or W14B Function Table Y e ABCD a EFGH Inputs A H B H X X Output C H D H E X F X G X H X X X H H H H All Other Combinations Y L L H H e High Logic Level L e Low Logic Level X e Either Low or High Logic Level C1995 National Semiconductor Corporation TL/F/10174 RRD-B30M105/Printed in U. S. A. DM54LS55/DM74LS55 2-Wide, 4-Input AND-OR-INVERT Gate April 1992 Absolute Maximum Ratings (Note) Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C DM54LS DM74LS 0§ C to a 70§ C b 65§ C to a 150§ C Storage Temperature Range Recommended Operating Conditions Symbol DM54LS55 Parameter VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current IOL Low Level Output Current TA Free Air Operating Temperature DM74LS55 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 V 0.7 0.8 V b 0.4 b 0.4 mA 8 mA 70 §C 2 2 V 4 b 55 125 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions VI Input Clamp Voltage VCC e Min, II e b18 mA VOH High Level Output Voltage VCC e Min, IOH e Max, VIL e Max VOL Low Level Output Voltage Typ (Note 1) Min DM54 2.5 DM74 2.7 Max Units b 1.5 V V VCC e Min, IOL e Max, VIH e Min DM54 0.4 DM74 0.5 IOL e 4 mA, VCC e Min DM74 0.4 V II Input Current @ Max Input Voltage VCC e Max, VI e 7V VI e 10V (DM54) IIH High Level Input Current VCC e Max, VI e 2.7V 20 mA IIL Low Level Input Current VCC e Max, VI e 0.4V b 0.4 mA IOS Short Circuit Output Current VCC e Max (Note 2) ICCH Supply Current with Outputs High VCC e Max, VIN e GND 0.8 mA ICCL Supply Current with Outputs Low VCC e Max, VIN e Open 1.3 mA 0.1 mA DM54 b 20 b 100 DM74 b 20 b 100 Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. Switching Characteristics VCC e a 5.0V, TA e a 25§ C Symbol CL e 15 pF, RL e 2 kX Parameter Min tPLH tPHL Propagation Delay Time 15 15 2 Units Max ns mA 3 Physical Dimensions inches (millimeters) 14-Lead Ceramic Dual-In-Line Package (J) Order Number DM54LS55J NS Package Number J14A 4 Physical Dimensions inches (millimeters) (Continued) 14-Lead Small Outline Molded Package (M) Order Number DM74LS55M NS Package Number M14A 14-Lead Molded Dual-In-Line Package (N) Order Number DM74LS55N NS Package Number N14A 5 DM54LS55/DM74LS55 2-Wide, 4-Input AND-OR-INVERT Gate Physical Dimensions inches (millimeters) (Continued) 14-Lead Ceramic Flat Package (W) Order Number DM54LS55W NS Package Number W14B LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation 1111 West Bardin Road Arlington, TX 76017 Tel: 1(800) 272-9959 Fax: 1(800) 737-7018 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Europe Fax: (a49) 0-180-530 85 86 Email: cnjwge @ tevm2.nsc.com Deutsch Tel: (a49) 0-180-530 85 85 English Tel: (a49) 0-180-532 78 32 Fran3ais Tel: (a49) 0-180-532 93 58 Italiano Tel: (a49) 0-180-534 16 80 National Semiconductor Hong Kong Ltd. 13th Floor, Straight Block, Ocean Centre, 5 Canton Rd. Tsimshatsui, Kowloon Hong Kong Tel: (852) 2737-1600 Fax: (852) 2736-9960 National Semiconductor Japan Ltd. Tel: 81-043-299-2309 Fax: 81-043-299-2408 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.